[SPARK-16775][DOC][FOLLOW-UP] Add migration guide for removed accumulator v1 APIs
[SPARK-16775][DOC][FOLLOW-UP] Add migration guide for removed accumulator v1 APIs

### What changes were proposed in this pull request?

Add migration guide for removed accumulator v1 APIs.

### Why are the changes needed?

Provide better guidance for users' migration.

### Does this PR introduce any user-facing change?

No.

### How was this patch tested?

Pass Jenkins.

Closes #28309 from Ngone51/SPARK-16775-migration-guide.

Authored-by: yi.wu <9b81b6b572502a3d331adf0e769042567493bb36@databricks.com>
Signed-off-by: Wenchen Fan <563f5923eae9a92c8a3f34a26b67fa348a303ed1@databricks.com>

ptkool/spark,spark-test/spark,xuanyuanking/spark,ptkool/spark,nchammas/spark,spark-test/spark,shaneknapp/spark,holdenk/spark,shuangshuangwang/spark,shaneknapp/spark,zuotingbing/spark,shaneknapp/spark,wangyum/spark,zuotingbing/spark,dbtsai/spark,rednaxelafx/apache-spark,chuckchen/spark,shuangshuangwang/spark,mahak/spark,spark-test/spark,ConeyLiu/spark,ueshin/apache-spark,BryanCutler/spark,jiangxb1987/spark,cloud-fan/spark,mahak/spark,BryanCutler/spark,milliman/spark,dbtsai/spark,vinodkc/spark,HyukjinKwon/spark,rednaxelafx/apache-spark,srowen/spark,wangyum/spark,wangmiao1981/spark,gengliangwang/spark,zzcclp/spark,vinodkc/spark,wangyum/spark,cloud-fan/spark,srowen/spark,holdenk/spark,apache/spark,zzcclp/spark,dongjoon-hyun/spark,spark-test/spark,cloud-fan/spark,zero323/spark,srowen/spark,wzhfy/spark,BryanCutler/spark,shuangshuangwang/spark,vinodkc/spark,holdenk/spark,witgo/spark,wangyum/spark,chuckchen/spark,WeichenXu123/spark,milliman/spark,vinodkc/spark,dongjoon-hyun/spark,HyukjinKwon/spark,nchammas/spark,vinodkc/spark,nchammas/spark,dbtsai/spark,HyukjinKwon/spark,nchammas/spark,jiangxb1987/spark,JoshRosen/spark,cloud-fan/spark,dongjoon-hyun/spark,rednaxelafx/apache-spark,xuanyuanking/spark,zuotingbing/spark,xuanyuanking/spark,ueshin/apache-spark,zero323/spark,dongjoon-hyun/spark,srowen/spark,kevinyu98/spark,zuotingbing/spark,zzcclp/spark,HyukjinKwon/spark,chuckchen/spark,BryanCutler/spark,ConeyLiu/spark,milliman/spark,wzhfy/spark,spark-test/spark,ptkool/spark,JoshRosen/spark,taroplus/spark,cloud-fan/spark,nchammas/spark,apache/spark,chuckchen/spark,dongjoon-hyun/spark,jiangxb1987/spark,kevinyu98/spark,wangmiao1981/spark,rednaxelafx/apache-spark,taroplus/spark,hvanhovell/spark,hvanhovell/spark,JoshRosen/spark,ueshin/apache-spark,wangyum/spark,ConeyLiu/spark,zuotingbing/spark,jiangxb1987/spark,dbtsai/spark,wangmiao1981/spark,hvanhovell/spark,taroplus/spark,ptkool/spark,apache/spark,wzhfy/spark,kevinyu98/spark,nchammas/spark,chuckchen/spark,gengliangwang/spark,gengliangwang/spark,HyukjinKwon/spark,milliman/spark,BryanCutler/spark,taroplus/spark,srowen/spark,apache/spark,mahak/spark,WeichenXu123/spark,zuotingbing/spark,shuangshuangwang/spark,vinodkc/spark,shaneknapp/spark,maropu/spark,dongjoon-hyun/spark,srowen/spark,HyukjinKwon/spark,zero323/spark,zero323/spark,wzhfy/spark,zero323/spark,milliman/spark,milliman/spark,witgo/spark,JoshRosen/spark,shuangshuangwang/spark,wangmiao1981/spark,apache/spark,mahak/spark,wzhfy/spark,dbtsai/spark,zero323/spark,mahak/spark,ConeyLiu/spark,witgo/spark,witgo/spark,apache/spark,kevinyu98/spark,dbtsai/spark,ptkool/spark,holdenk/spark,BryanCutler/spark,wzhfy/spark,vinodkc/spark,xuanyuanking/spark,maropu/spark,wangmiao1981/spark,zuotingbing/spark,wangmiao1981/spark,nchammas/spark,ueshin/apache-spark,kevinyu98/spark,HyukjinKwon/spark,rednaxelafx/apache-spark,cloud-fan/spark,rednaxelafx/apache-spark,srowen/spark,ConeyLiu/spark,WeichenXu123/spark,cloud-fan/spark,mahak/spark,zzcclp/spark,ptkool/spark,maropu/spark,wangyum/spark,dbtsai/spark,ueshin/apache-spark,wangmiao1981/spark,JoshRosen/spark,taroplus/spark,chuckchen/spark,xuanyuanking/spark,taroplus/spark,gengliangwang/spark,maropu/spark,shaneknapp/spark,JoshRosen/spark,zzcclp/spark,WeichenXu123/spark,maropu/spark,ConeyLiu/spark,BryanCutler/spark,witgo/spark,spark-test/spark,shaneknapp/spark,WeichenXu123/spark,gengliangwang/spark,apache/spark,JoshRosen/spark,maropu/spark,holdenk/spark,WeichenXu123/spark,hvanhovell/spark,shaneknapp/spark,ConeyLiu/spark,gengliangwang/spark,jiangxb1987/spark,witgo/spark,kevinyu98/spark,maropu/spark,holdenk/spark,zzcclp/spark,zzcclp/spark,hvanhovell/spark,witgo/spark,rednaxelafx/apache-spark,ptkool/spark,zero323/spark,hvanhovell/spark,xuanyuanking/spark,ueshin/apache-spark,wzhfy/spark,shuangshuangwang/spark,jiangxb1987/spark,gengliangwang/spark,holdenk/spark,chuckchen/spark,shuangshuangwang/spark,taroplus/spark,ueshin/apache-spark,hvanhovell/spark,spark-test/spark,jiangxb1987/spark,kevinyu98/spark,milliman/spark,mahak/spark,xuanyuanking/spark,wangyum/spark,dongjoon-hyun/spark,WeichenXu123/spark